The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 2005
Filed:
Feb. 18, 2004
Masahiko Kamiya, Anjo, JP;
Hiroshi Kondo, Chiryu, JP;
Shin Sasaki, Okazaki, JP;
Daizo Oba, Kariya, JP;
Masahiko Kamiya, Anjo, JP;
Hiroshi Kondo, Chiryu, JP;
Shin Sasaki, Okazaki, JP;
Daizo Oba, Kariya, JP;
Advics Co., Ltd., Aichi-pref., JP;
Abstract
An output signal that accords with a rotation speed of a brake rotor of a respective wheel is output by a vehicle wheel speed sensor. A noise frequency identification portion identifies a frequency component that corresponds to brake noise from this output signal. It is possible, for example, to identify a frequency component that corresponds to brake squeal by performing fast Fourier transform (FFT) calculation for the vehicle wheel speed. Further, a noise detection portion determines that brake noise is being generated when the frequency component identified by the noise frequency identification portion is equal to or more than a predetermined value.